Valve insides



Nov. 2, 1937. A. E. BRoNsoN 2,097,614 l VALVE INSIDES Filed Des. 8, 1951 Patented Nov. 2, 1937 y UNITE STATES@ VALVE INSIDES Adelbert E. Bronson, Cleveland.,0hioassignor to` The Dill Manufacturing Company, Cleveland, Ohio, a` corporation of Ohio Y Application December s, 1931. serai No. 579,719

' rclaim. (c1. 152-12) This invention relates to valve insides such as are used in the valve stems of pneumatic tires.

-An object of theinvention is to provide avalve insides which is so constructed that maximumair passages are provided through the-valve insides thus permitting quick Vin'flation'and deflation of the tire equipped with the insides. l

Another object is to provide a valve insides which is of simple construction andmay be readily and economically manufactured.

Additional and further objects of the invention will become apparent Ahf-ireinater during the following detailed description of several embodiments of the invention. Q

Y The embodiments of the invention to be described herein are illustrated in the accompanying drawing, wherein Figurel is an relevational view, on a greatly enlarged scale, of a valve insides;

Fig. 2 is a transverse sectional View through the valve insides shown in Fig.,1 and isvtaken substantially on line 2-2 of Fig. 1, looking in the direction of the arrows;

Fig. 3 is a top plan Viewv of the valve insides kshownin Fig. 1;

Figs. 4 and 5 are detail top, plan and side 4elevational views of a modied form of swivel, and

Figs. 6 and 7 are detail top plan and side elevational views of a still further modied form oi swivel.

As is well understood in the art, valve insides for the valve stems of pneumatic tires are constructed so that they may be screwed into the bores of the valve stems and include the valves proper and their seats. Since the valve insides are screwed into the bores of the valve stems they must be provided with threaded rotatable parts for this purpose and ordinarily such parts have constituted threaded plugs swivelly connected to the barrels of the insides and having at their outer ends portions through which the valve pins extend and, in some instances, against which the valve springs abut. f

In the ordinary or conventional form of valve stem, the bores through the stems are of small diameter necessitating the use of valve insides of extremely small size. Consequently the provision of air passages through the valve insides of suicient size to permit of quick iniiation and deiiation of the tire is a major consideration in valve insides design.

The present invention contemplates a valve insides construction wherein provision is made 55 for screwing the valve insides into the valve stem bore that is simple andeconomical and provides maximum air passages through the valve insides.

Referring to the drawing, the, barrel of the valve insides is indicated at IB Vand has a tapered `inner end II forming the seat for the valve proper, later to be referred to, and a bore I2 that extends Vlongitudinally through the barrel. The Y bore I2 intermediate its endsY is, providedV with a shoulder I3 forming'an abutment for one end of the valve spring (later to be referred to). The barrel Ill Valso has an` external annular groove I6 intermediate its ends and Within which is arranged aflexible packing I5 which engages the `wall of the bore-through the valvestem when the insides are screwed-'into the same to form an air-tight t between the valve insides and valve stem, as is well understood in the art.

The valve vproper of the valve insides comf prises a member I6 having in its end adjacent to the end II of the barrel, a recess within which is arranged a flexible packing I'l adapted to seat against the end Il of the barrel I0 when the valve is closed.' The valve proper is secured upon the lower end of the valve pin I8. e

The valve pin I8 has a tapered enlargement i9 formed thereon and bearing against the packing Il of the valve proper, the enlargement I9 acting to guide the valve pin I8 when the pin is moved in the barrel IIJ and to limit the lateral movement of the lower end of the pin. The valve pin I8 extends through the bore `I2 of the barrel I0 and projects beyond the outer end of the barrel and has at its extreme outer end a head 20. In- Wardly of the head the pin I8 may have anY abutment collar 2| arranged thereon and engaging against an annular shoulder 22 formed on the pin I8.

A valve spring 23 in the form of a coil spring is arranged on the valve pin I8 within the bore I2 of the barrel I0 and has its opposite ends abutstood, of course, that the valve spring 23 maintains the valve proper of the valve insides normally seated against the end II of the barrel in the form of construction shown in Fig. 2, and that the valve proper and valve pin must be moved against the tension oi the spring to unseat the valve proper.

In order to provide an economical construction for enabling the valve insides to be screwed into the bore of the valve stem and one wherein maximum air passages are provided, it is proposed to employ a member which may comprise a relativelythin at bar 24, having a depth greater transverse opening 26 of a diameter slightlyv greater than the diameter of the valve pin I 8 which extends therethrough and is guided therein.

The bar 24 may be readily and economically cut from lengths of bar stock, its opposite ends 25 curved and threaded and the transverse opening 2B drilled therein. The bar 24 is arranged on the valve pin I8 between the shoulder 22,and

the head 2i), it being understood that the head 20 is formed on the valve pin after the pin has been passed through the opening 26 in the bar 25.

'Ihe valve insides described above is inserted in the bore of a valve stem and the bar 24 rotated to engage the threads on the opposite ends 25 thereof with the threads on the wall Yof the-valve stem bore and to screw the barl into the valve stem bore. The bar 24 engages-they adjacent end ofthe barrel III as it is screwed into Athe valve stem and forces the barrel. I il and valve pin I8 longitudinally into the stem, it being remembered that the opening 26 in the baris slightly larger in diameter than the pin I8 whereby the bar may rotate independently of the pin. When the bar 24 is rotated in the opposite direction, it will move outwardly of the valve stem bore and, engaging with the head 2Q of the valve pin I3, will force the pin and the barrel I in an outward direction.

` The bar 24 needs only to be of athickness sufcient to enable the drilling ofthe opening 26 in the bar and, since this opening is just slightly larger in diameter than the diameter of the valve pin I8, it will be seen that the thickness of the bar 24 is much less than the diameter of the upper end of the bore I2 in the barrel IIJ and, therefore,

maximum air passages 2'I (see Fig. 3) are provided at the outer end of the barrel I0.

In Figs. 4 and 5 there is disclosed a form of swivel constructed from a bar but differing from the swivel 24, previously described, in that the bar is of less thickness than the diameter ofk the valve pin I8, thereby affording even greater air passages through the valve insides than in the form of construction shown in Fig. 2. In this modified form of construction, the relatively thin bar 26 has a boss 2I swedged up intermediate the ends of the bar to provide the required thickness and strength for the pin hole 28.

In Figs. 6 and '7 there is disclosed a swivel formed of a bar that is thinner than the bars in either of the two previously described forms of swivel. In this form of swivel the very thin bar 29 has its opposite ends 30 flanged laterally in opposite directions and curved to form arcs oi the circular inner periphery of the standard valve stern.4 Thieseflanged ends of the bar 29 are threaded to enable the bar to be screwed into a. valve stern. It will be noted that theflanged ends 3!) provide ample thread area and enable the. bar to be formed of very thin stock thus increasing the passages through the valve insides.

Although specicembodiments of the invention havev been illustrated and described herein, it should be understood that the invention is susceptible of various modifications and adaptations within the scopeof the appended claim.

Having thus described my invention,V I claim:

A valve insides comprising a barrel having a longitudinal bore therethrough, a valve p in extending-throughthe barrel and having secured thereto. adjacentits inner end a valve proper, and a member freely rotatable` on said valve pin outwardly of the outer end of the barrel and rotatable relative to saidbarrel, said member being in the form of a bar. having its opposite ends laterally flanged and curved onY arcs of the same circle and provided withthreads, said' member forming the means by which the valve insides may be screwedinto a valve stem.

ADELBERT E. BRONSON. 

